Improvement in combined sink-strainer and stench-trap



UNITED STATES PATENT OFFICE.

HENRY F. SHAW, OF IVEST ROXBURY, ASSIGNOR TO HIMSELF AND WM. S. LOOKE, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN COMBINED SINK-STRAINER AND STENCH-TRAP.

Specification forming part of Letters Patent No. 12,917, dated May 24, '1864.

To all whoml it may concern:

Be it known that I, HENRY F. SHAW, of lVest Roxbury, in thev coun ty of Norfolk and State ot' Massachusetts, have invented a new and usefulImprovement in Sink-Strai ners and Stencli-Traps; and Ido hereby declare that the following is a full, clear, and exact description ofthe construction and operation of the same, reference being had to the accompanying drawings, forming a part of this specitication, in whit-h- Figurc l is a vertical central section, and Fig. 2 is a cross-section in the line x of Fig. 1.

Like parts are indicated by the same letters in both drawings.

The nature of my invention consists in so constructing and arranging' a single cup, (l, as to answer the double purpose of a stenchtrap and a strainer, substantially as hereinafter explained.

To enable others skilled in the art to make and use my improvement, I will now .proceed to describe its construction and operation.

A is a bell shaped cup, or an expansion o1" the outlet B, provided with a tlange, t', which is embedded in the sinkbottom, in the usual manner.

C is a cup of iron or other suitable material, the upper edge ot' which is provided with a tlange, g, which tits closely in the rabbet l1, around the npperinner edge of A. This cup (l may be confined to A by means ot' nails or screws passing through holes in the earsj, (see Fig. 1,) of which there should be three or tour. The cup A should be enough larger than C to ait'ord the requisite space between the two for the ow otl water. Through the cup C are a number of oblique perforations, d, extending from the cutside downward to the inside, as shown in Fig. l. The size and number of thse perforalions d may be varied at pleasnre. Their combined capacity of delivery, however, should equal that of the outlet B, and

Athey should be so small as to operate in a f, forming a strainer-cover to the cup O, the

inner upper edge of which is provided with a rabbet, k, to receive the same.

From the above description it is obvious that the water will stand in the cup C up to the line e, Fig. l, and thereby form a complete stench-trap, and when the water in the cup rises above the line x it will tlow upward through the perforations el into the bowl A, and thence uninterruptedlyinto the outlet B.

The space between the cups C and A, a'ording a smooth uninterrupted passage for the water, will seldom or never be clogged orlled with ice, and when the cup C is lilled with sediments they can be readily removed by taking oli' the cover E; or, if the pert'orationsI d should ever be clogged they can be easily cleared by the use ot' a wire, so that it will seldom or never become necessary to remove thc cup C from its seat, thereby exposing the outlet B to being clogged with articles too large to pass with freedom through it, my invention being in this respect agreat improvement over other kinds of stench-traps and strainers in general use.

Having thus described the construction and operation ot' my improvement, What I claim as new, and desire to secure by Letters Pat` ent, is-

The cup O, provided with the oblique perforations d, to operate both as a stenclrtrap and strainer, substantially as described.

HENRY F. SHAW. litnessesz N. AMES, Jas. F. ELLIS. 

